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Assessing 1,9-Decadiene/Ethylene Copolymerization with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene
[Image: see text] 1,9-Decadiene/ethylene copolymerization is assessed as a way for Ziegler–Natta catalysts to access long chain-branched polyethylene (PE). A MgCl(2)/9,9-bis-(methoxymethyl)fluorine/TiCl(4) catalyst with triethylaluminium as a cocatalyst is exemplified for the task. 1,9-Decadiene was...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807785/ https://www.ncbi.nlm.nih.gov/pubmed/33458520 http://dx.doi.org/10.1021/acsomega.0c05211 |
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author | Liu, Yang Qin, Yawei Dong, Jin-Yong |
author_facet | Liu, Yang Qin, Yawei Dong, Jin-Yong |
author_sort | Liu, Yang |
collection | PubMed |
description | [Image: see text] 1,9-Decadiene/ethylene copolymerization is assessed as a way for Ziegler–Natta catalysts to access long chain-branched polyethylene (PE). A MgCl(2)/9,9-bis-(methoxymethyl)fluorine/TiCl(4) catalyst with triethylaluminium as a cocatalyst is exemplified for the task. 1,9-Decadiene was found to induce a substantial comonomer effect on catalyst activity and continuing decreases of PE molecular weight. Both the double bonds of 1,9-decadiene were poorly reactive during polymerization, of which the polymer chain-attached was even much less reactive than the original one. As a consequence, at decreased feeds, 1,9-decadiene gave small amounts (<0.1 mol %) of pendant vinyl groups to PE without prompting the formation of long-chain branches. Long chain-branching was realized at increased 1,9-decadiene feeds, which was however accompanied by proportional gelation. |
format | Online Article Text |
id | pubmed-7807785 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-78077852021-01-15 Assessing 1,9-Decadiene/Ethylene Copolymerization with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene Liu, Yang Qin, Yawei Dong, Jin-Yong ACS Omega [Image: see text] 1,9-Decadiene/ethylene copolymerization is assessed as a way for Ziegler–Natta catalysts to access long chain-branched polyethylene (PE). A MgCl(2)/9,9-bis-(methoxymethyl)fluorine/TiCl(4) catalyst with triethylaluminium as a cocatalyst is exemplified for the task. 1,9-Decadiene was found to induce a substantial comonomer effect on catalyst activity and continuing decreases of PE molecular weight. Both the double bonds of 1,9-decadiene were poorly reactive during polymerization, of which the polymer chain-attached was even much less reactive than the original one. As a consequence, at decreased feeds, 1,9-decadiene gave small amounts (<0.1 mol %) of pendant vinyl groups to PE without prompting the formation of long-chain branches. Long chain-branching was realized at increased 1,9-decadiene feeds, which was however accompanied by proportional gelation. American Chemical Society 2021-01-04 /pmc/articles/PMC7807785/ /pubmed/33458520 http://dx.doi.org/10.1021/acsomega.0c05211 Text en © 2021 The Authors. Published by American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. |
spellingShingle | Liu, Yang Qin, Yawei Dong, Jin-Yong Assessing 1,9-Decadiene/Ethylene Copolymerization with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title | Assessing 1,9-Decadiene/Ethylene Copolymerization
with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title_full | Assessing 1,9-Decadiene/Ethylene Copolymerization
with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title_fullStr | Assessing 1,9-Decadiene/Ethylene Copolymerization
with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title_full_unstemmed | Assessing 1,9-Decadiene/Ethylene Copolymerization
with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title_short | Assessing 1,9-Decadiene/Ethylene Copolymerization
with Ziegler–Natta Catalyst to Access Long Chain-Branched Polyethylene |
title_sort | assessing 1,9-decadiene/ethylene copolymerization
with ziegler–natta catalyst to access long chain-branched polyethylene |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807785/ https://www.ncbi.nlm.nih.gov/pubmed/33458520 http://dx.doi.org/10.1021/acsomega.0c05211 |
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